Kohler MAGNUM M18

SECTION 6B
FUEL SYSTEMS
Inspection
Carefully inspect all components and replace those
that are worn or damaged.
* Inspect the carburetor body for cracks, holes, and
other wear or damage.
ө Inspect the float for cracks or holes. Check the
float hinge for wear, and missing or damaged float
tabs.
© Inspect the fuel inlet needle for wear or grooves.
* Inspect the tip of the idle fuel adjusting needle for
wear or grooves,
* Inspect the throttle and choke shaft and plate as-
semblies for wear or excessive play.
Repair
Always use new gaskets when servicing and reinstall-
ing carburetors. Repair kits are available which in-
clude new gaskets and other components. These kits
are described below.
Components such as the throttle and choke shaft as-
semblies, throttle plate, choke plate, idle fuel needle,
main jet, and others, are available separately.
Refer to the appropriate Parts Manual to ensure the
correct carburetor repair kits and replacement parts
are ordered.
Carburetor Repair Kit No. 25 757 11
(For WHG-Serles 1") Contains:
Qty. Description
Gasket, carburetor (3 different styles)
Gasket, air cleaner (4 different styles)
Gasket, fuel bowl
Gasket, bowl retaining screw
Plug, 3/8" dia. welch
Plug, 5/16" dia. welch
Needle, fuel inlet
Valve, fuel inlet assembly
annuum
Float Assembly Kit No. 25 757 09
(For WHG-Serles Carbs.) Contains:
Qty. Description ]
1 Float Assembly
1 Float Pin
Reassembly
Throttle Shaft Installation
1. Install the foam dust seal on throttle shaft. Insert
the throttle lever/shaft assembly into carburetor
body with the cutout portion of shaft facing the
carburetor mounting flange.
2. Install the throttle plate to throttle shaft. Make sure
the plate is positioned property in bore as marked
and noted during disassembly (the numbers
stamped on plate should face the carburetor
mounting flange). Apply Loctite® #609 to threads
of 2 plate retaining screws. Install screws so they
are slightly loose.
3. Apply finger pressure to the throttle lever/shaft to
keep it firmly seated against pivot in carburetor
body. Rotate the throttle shaft until the throttle
plate fully closes the bore around its entire perim-
eter; then tighten screws. Refer to Figure 6B-10.
Throttle Lever/
Tightening ud Shaft Assembly
Apply Pressure When
Figure 6B-10. Installing Throttle Lever/Shaft.
4. Operate the throttle lever; check for binding be-
tween the throttle plate and carburetor bore.
Loosen screws and adjust throttle plate as neces-
sary; then torque screws to 8/12 in. 1b.
6B.8